DIY chainsaw repair champion 335

In detail: do-it-yourself repair of the champion 335 chainsaw from a real master for the site my.housecope.com.

The chainsaw is a worthy replacement for hand saws and axes. Today, this tool is available in almost every household - it is indispensable for setting up a personal plot, construction and repair work. Intensive use and improper care of the tool can lead to premature failure. However, the owner of the chainsaw does not have to go to the workshop right away - many of the faults that can happen to her during operation can be completely eliminated on their own.

Correct diagnosis is essential for a successful repair. Therefore, in order to determine why the chainsaw failed and, most importantly, how to make it work again, you first need to know the features of its design.

It should be noted that it does not differ in particular complexity, since it includes:

engine (two-stroke gasoline);
functional part (saw bar and chain);
systems that ensure the joint operation of these two units (ignition, filtration, lubrication, etc.), that is, the tool as a whole.

In order to simplify the diagnosis of malfunctions, it is customary to distinguish them into two main categories:

engine malfunctions;
malfunctions of other parts of the chainsaw.

Most often, failures occur in the engine systems, however, the rest of the tool, due to intensive use or improper care, can fail at any time. How to determine exactly where the breakdown occurred? Simple logic will help us with this.

If the problem is with the engine, it will:

Video (click to play).

do not start;
deafen;
work unstable;
overheat;
smoke;
develop insufficient power.

As for all other malfunctions, as a rule, they manifest themselves with a normally operating motor.

If your chainsaw won't start, the first thing to do is to check for a mixture of fuel in the tank. By the way, it must be prepared in the proportions indicated by the engine manufacturer, otherwise the instrument will simply not start.

After verifying that the fuel mixture is correct and available, the ignition system should be checked. To do this, you need to inspect the spark plug.

Her condition can say a lot:

indicates that the fuel mixture does not enter the carburetor, which means that the problem is not in the ignition;

fuel-splattered candle

is the result of an overabundance of the fuel mixture, which lies either in a violation of the engine starting algorithm, or in an incorrect carburetor adjustment;

this is a signal about the presence of low-quality oil in the engine lubrication system, incorrect carburetor settings, or an incorrectly prepared fuel mixture.

If the spark plug is splashed with fuel, wipe it thoroughly after removing it. The fuel supply system should also be cleaned. To do this, it overlaps, after which the starter is turned on. A carbonized candle must be carefully cleaned with an awl and emery.

When checking the spark plugs, you should pay attention to the distance between the electrodes (the normal gap is 0.5-0.65 mm), as well as the condition of the gasket and the presence of a spark. A damaged or worn gasket will have to be replaced, and the spark can be checked by putting on the ignition cable, connecting the cylinder and plug nut, and starting the starter.

If the discharge does not occur, the plug must be replaced. In the event that a spark does not appear with a new candle, then the problem is in the connection to the high-voltage wire or in it itself.

If the fuel mixture does not flow into the cylinder, but the spark plug is working properly, this may mean that:

Clogged fuel filter.

To clean this unit, remove the fuel hose and check the jet. If it is weak, the filter must be removed through the filler hole of the fuel tank and cleaned or replaced if completely worn out.

As a preventive measure, it is recommended to replace the fuel filter at least once every 3 months.

This is nothing more than a hole in the fuel tank cap, which is cleaned out with an awl.

The fuel mixture is not supplied or is supplied insufficiently.

There may be several reasons for this:

the air filter is clogged (in this case, it must be removed, rinsed with water, dried and replaced);
the carburetor settings are out of order (which means this unit needs to be re-adjusted);
the integrity of the carburetor membrane is broken (must be replaced);
the channels of the carburetor are clogged (it must be disassembled and all parts and assemblies must be cleaned).

If at low speeds the engine of the chainsaw works normally, but at high speeds it starts to stall and smoke, the problem may be hidden in the muffler.

To check the quality of its work, you should do:

dismantling (with the obligatory closing of the outlet);
disassembly (if the muffler is collapsible);
cleaning from carbon deposits using special detergents or dry method;
drying (using a hair dryer);
reassembly and assembly.

Dry cleaning without respiratory protection is not recommended. The carcinogens present in the soot will be released into the surrounding atmosphere in the form of dust, the inhalation of which is extremely hazardous to health.

To prevent clogging of the muffler during the operation of the chainsaw, you should carefully monitor the composition of the fuel mixture and the quality of its components.

If the chainsaw engine does not start or cannot develop normal power, it is likely that sufficient pressure does not build up in the engine cylinder for combustion of the fuel mixture. The reason for this may be the wear of the elements of the cylinder-piston group - the piston, rings, bearings, etc. In order to assess the condition of this unit, it should be visually inspected, having previously removed the muffler.

For a more complete diagnosis, a compression gauge is placed in the spark plug hole of the two-stroke engine of the chainsaw. It measures the compression in the engine. Based on the results of the check, one can judge the state of the CPG, however, the exact facts can only be obtained with a complete disassembly of the unit.

If the piston is chipped or scratched, it will obviously need to be replaced. The same applies to deformed or broken piston rings - for normal engine operation, they must be completely intact and free of carbon deposits.

A properly working carburetor guarantees maximum efficiency of the chainsaw, that is, it is possible to develop full power with the most economical consumption of the fuel mixture. The adjustment of this unit is usually carried out by the manufacturer, but its design provides for the possibility of adjustment already during operation.

The fact that such a setting will have to be performed by the owner of the chainsaw is evidenced by:

Strong vibrations or damage to the protective cover.
CPG wear.
Carburettor clogged.
Inability to start the engine or its spontaneous stops after starting.
Increase in fuel consumption and emissions while decreasing engine power.

Chainsaw carburetor adjustment is carried out in strict accordance with the manufacturer's instructions using three special screws, which are responsible for the maximum ("M") and minimum ("L") revolutions, as well as the idle speed of the engine ("T"). In order to exclude unwanted interference by an inexperienced user with the carburetor operation, some manufacturers install only one idle screw.

Carburetor adjustment is carried out in two stages:

Basic (carried out with the engine off).
Finishing (carried out with a running, pre-warmed engine).

For basic adjustment, screw in screws H and L as far as the stop and back out 1.5 turns. Final adjustments require the engine to warm up for 5-10 minutes at low revs.

The final calibration is performed by unscrewing the idle screw until the minimum engine speed is reached (in this case, its operation must be stable, and the chain must be stationary). If the engine stops at idle speed, the screw must be returned back, and if the saw chain is still in motion, continue turning counterclockwise.

Calibration check is performed by test:

Acceleration (with a smooth press on the accelerator, the engine should quickly pick up speed to the maximum indicator).
Maximum speed (if there is an ignition interruption, screw H should be slightly loosened).
Work at idle speed (the chain should not move, and the engine should pick up speed as quickly as possible).

If the owner of the chainsaw is not familiar with the carburetor device and does not have the tool necessary to calibrate it, contact a specialist. The carburetor is a very complex unit, so any wrong action can lead to irreversible consequences, for example, complete engine failure.

If the diagnostics showed that everything is in order with the engine and its systems, then the cause of the malfunction should be looked for in other units of the chainsaw. The most common problems are:

failure of the starter;
improper operation of the lubrication system;
incorrect operation of the chain brake;
saw chain wear, etc.

If the cause of the failure of the tool is not visible to the naked eye, as is the case with the engine, it is necessary to carry out a thorough diagnosis of the faults and eliminate them in accordance with the manufacturer's recommendations and safety regulations.

The chainsaw is an irreplaceable assistant in the household. This is especially true for a country house. Such a tool is very easy to use and has a simple design. But, unfortunately, even all these advantages cannot guarantee the durability of the chainsaw.

Like any other tool, the saw can fail sooner or later. But, do not be upset, as many problems can be fixed at home. The main thing is to have certain knowledge and a set of tools.

Horizontal Chainsaw

The chainsaw has a fairly simple device. If you know the basic elements of the tool, then, if necessary, you can easily carry out repairs with your own hands. So, in a chainsaw, the following main details can be distinguished:

engine;
clutch;
oil pump;
chain;
brakes and chain catchers.

Depending on the brand, each chainsaw has its own structural features. So, if we talk about the engine, then it can be located both vertically and horizontally.

In professional instruments, the motor is generally vertical. As for the models with a horizontal power unit, they are compact in size. This became the main reason for their popularity and widespread use in everyday life.

Unfortunately, regardless of the build quality, chainsaws break sooner or later. In frequent cases, repairs can be done by hand. But in order to do this, you must first determine the cause of the problem. Often, a failure in work is associated with a malfunction of the power unit or other units of the chainsaw.

So, if we talk about the power unit, then the problem may arise in the ignition, fuel supply and starter. Also, the problem may lie in the piston and even in the cylinder.
You can determine the malfunction of the power unit by the following signs:

complete engine failure during operation;
the unit starts up, but immediately stalls;
the engine is not able to develop the required power;
interruptions occur.

Read about how to make a screw log splitter with your own hands in our article.

We suggest reading an article on how to choose the right chainsaw.

Before starting any action, you must carefully analyze the situation.

Elements of the ignition system

Engine problems are often associated with ignition. That is why it is necessary to start the inspection with this system. First you need to get out a candle and carefully examine it. Here you need to carefully remove the wire and unscrew the candle. This is done using a special key.

If the spark plug is wet, it is a clear sign of excess fuel. This is mainly due to improper operation of the ignition system or carburetor. As for the candle, it must be thoroughly wiped dry. It is also worth draining the cylinder. To do this, shut off the fuel supply and start the starter several times. By doing this, you can remove excess fuel. Next, the plug is installed in place and the engine starts.

If the spark plug has black carbon deposits, then this indicates the use of bad oil or the combination of oil with gasoline in the wrong ratio. In some cases, it may be necessary to adjust the carburetor. Here, the candle must be cleaned of carbon deposits and installed in the socket.

If the tool still does not start, then it is worth checking for the presence of a spark: a high-voltage cable is put on the candle and leaned against the cylinder. After that, you need to pull the starter several times. As a result, a spark should appear between the electrode and the cylinder.

If the above actions did not work, then it is worth replacing the spark plug and checking the tool in operation. If the spark does not occur, then the problem is probably hidden in the high voltage wire.

When the inspection has not yielded results, you can proceed with the diagnosis of the fuel supply system. The system malfunction can be caused by:

dirty fuel filter;
stopping the hole in the tank lid;
supply of a small amount of fuel.

Here, first of all, you need to disconnect the fuel hose and check if fuel is leaking from it. Provided that the fuel flows in a normal stream, then everything is fine.

If the jet is weak or completely absent, then you need to clean the hole in the cover with a needle. The fuel must be drained to clean the filter. Using a hook, the filter together with the suction hose is pulled out through the filler hole.

The filter must be thoroughly cleaned or replaced with a new Chinese analogue, which has a low cost. The fuel filter should be cleaned every 3 months. Frequent use of the tool will increase the cleaning frequency.

An important element of the system is the air filter. It is recommended to periodically clean it. Remove the filter very carefully, otherwise dirt can enter the carburetor.

If the previous steps did not solve the problem, then it is worth moving on to checking the carburetor. If necessary, it will be adjusted. If you have not encountered such a problem before and did not perform the adjustment at home, then it is better to use the services of a specialist.

Otherwise, making a mistake will lead to more serious problems. The carburetor is a complex device that consists of small parts. In case of careless disassembly, parts can be lost.

With frequent use of the tool, problems may arise with its silencer. During operation, carbon deposits form on the pipe walls, which further prevents the exit of exhaust gases.

To fix this problem, you must remove the muffler and rinse it thoroughly. For this, use special detergents.Dry the muffler thoroughly before reinstalling it.

The manual that comes with the chainsaw indicates the need to control the chain lubrication system. A common cause of malfunction is clogging of the channels responsible for the lubrication supply. If the oil leak is negligible, then the tool can continue to be used as intended. But, if you notice a significant leak, then it must be eliminated immediately.

First, you need to check the tightness of the connection of the pipes with the fittings. If necessary, the tubes are replaced or the connection is sealed with special materials.

For an article on how to choose the right pruner for grafting trees, read here.

It is also necessary to check the oil pump. If cracks are visible on its body, then it must be replaced.

In cases where the chain brake does not work, it is necessary to carry out a thorough inspection of the brake band. During operation, it can become contaminated with grease or sawdust.

In addition to the above malfunctions, other malfunctions may occur with the chainsaw. This mainly applies to consumables that have their own service life. So, in the process of work, an outcome of the tire, drive sprocket and other parts may occur.

To prevent the occurrence of more complex problems, it is necessary to change such parts in a timely manner.
With this knowledge, you will be able to repair such chainsaws as Druzhba 4, Shtil 180, Huskvarna, Ural, with your own hands. This will significantly reduce repair costs.

Below, we suggest you watch a video on how to fix a chainsaw at home with your own hands:

It would seem, why does a chainsaw need a summer resident who grows vegetables and fruits, or the owner of a country house who has a small garden and several flower beds? The question disappears when there is a desire to build a bathhouse, update a greenhouse, topple an old business, or just make a bench for relaxation. Unfortunately, any mechanism periodically needs preventive maintenance and replacement of spare parts, and for this you need to be well versed in the device of the product, besides, repairing the chainsaw with your own hands will save time and money.All chainsaws are similar in structure, regardless of whether they are European (ECHO, Stihl, Husqvarna) or domestic (Kedr, Ural). The main elements are located inside the body - the fuel tank and the engine, and outside the starter, the handle, the saw part (tire) with the chain. A sharp jerk in the cable starts the engine, which starts the saw blade.To begin with, we suggest that you familiarize yourself with the video clips that show how the chainsaw works and how it works:From time to time, the saw malfunctions, which require disassembly to eliminate. What can happen to such a simple mechanism as a chainsaw? At least the following:

Stops getting started;

Starts up, but soon stops;

Ceases to function in the cut;

Loses its power;

Most of the malfunctions are associated either with interruptions in the operation of the engine (fuel supply system, exhaust system, ignition, cylinder-piston part), or with malfunctions of other systems and assemblies (clutch, chain brake, tire, lubrication system). Let's consider the most common breakdowns and techniques for their elimination.A serviceable chainsaw starts with one jerk and does not fail in the cutThe first thing to do if a chainsaw breaks down is to inspect the spark plug by disconnecting the wire and carefully unscrewing it with a special key.Components of the chainsaw ignition system: 1 - flywheel with magnets, 2 - ignition module, 3 - spark plug, 4 - high voltage wireUnscrew the spark plug to check its condition.Her appearance says a lot:

Dry. Most likely, the fuel mixture does not enter the cylinder. It's not about the ignition system, so the plug is screwed back in.

Strongly splashed with fuel. The reason for the excess fuel mixture lies either in the violation of the starting rules, or in the incorrect adjustment of the carburetor. The spark plug is carefully wiped, shut off the fuel supply and turn on the starter - to remove excess fuel and ventilate the combustion chamber. Then the candle is put in place and the mechanism is started again.

Covered with black carbon. This may indicate the use of low-quality oil, an incorrectly adjusted carburetor, or an incorrectly calculated gasoline to oil ratio. The candle should be washed, cleaned of carbon deposits with a sharp object (awl or needle), wipe the electrodes with a sandpaper and put in place.

When checking the candle, you need to pay attention to the gap between the electrodes: it is considered normal from 0.5 to 0.65 mm. A damaged or worn gasket must be replaced.A large amount of black carbon on the spark plug indicates a malfunction of the engine.To be sure, you should also check for a spark. To do this, put the ignition cable on the spark plug, connect the plug nut and the cylinder with pliers, start the starter and watch for the spark. If it is missing, the plug must be replaced. If the new spark plug also does not emit sparks, the problem is in the high-voltage wire or in the broken connection with the spark plug.Fuel may not enter the cylinder for the following reasons:

Dirty fuel filter. Remove the fuel hose and check how the fuel flows. If the jet is weak, the filter may need to be cleaned. It is taken out through the filler hole of the fuel tank and cleaned; in case of severe contamination, it is replaced with a new one. As a preventive measure, it is recommended to replace the fuel filter every three months.

Clogged breather (holes in the fuel tank cap). It is also checked by disconnecting the hose, in case of blockage, clean it with a needle.

Lack or insufficient amount of fuel. There may be several reasons for the malfunction. The first reason is a clogged air filter. Air ceases to flow into the carburetor in the required amount, in this regard, due to a too rich fuel mixture, engine operation is disrupted. The contaminated filter is carefully removed, cleaned and washed in water, then dried and reinstalled.

Another reason is improper adjustment of the carburetor. The adjustment is made with three screws.Timely replacement of the fuel filter ensures full fuel supplyThe fuel hose and choke actuator must fit snugly on the fittingsThe throttle lever cable must be in placeDuring work, you must use the instructions, otherwise you can only make it worse.And the last reason is a violation of the integrity of the membrane or clogging of the carburetor channels.To repair the carburetor yourself, you need to get acquainted with all its parts.All parts must be clean, dry and in good condition.If the engine works fine at low speeds, and at high speeds it starts to stall, the reason may lie in the spark arrester of the muffler, clogged with combustion products.

remove the muffler;

disassemble (there are also non-separable models);

remove carbon deposits using detergents;

dry with a hairdryer;

install in place.

Dry cleaning is unacceptable, as the soot contains carcinogens, the inhalation of which is hazardous to health. After removing the muffler, cover the outlet with a clean cloth.Interruptions in the operation of the chainsaw signal a possible clogging of the mufflerTo avoid clogging of the muffler, it is necessary to monitor the composition of the fuel mixture. The amount of oil should not exceed the rates recommended by the manufacturer. Poor oil quality also negatively affects engine performance.Often the engine will not start or run at full capacity due to low cylinder pressure. It can be caused by piston or cylinder wear, piston ring sinking, bearing wear.You can partially examine the state of the cylinder-piston group (CPG) by removing the muffler and looking into the opened hole.A compressor placed in the plug hole will help to measure the compression in the engine - according to the measurement results, you can also talk about the state of the CPG. Accurate data is obtained only after complete disassembly of the mechanism. If the piston is chipped or scratched, it must be replaced. The piston ring must be clean, free of carbon deposits, and be exactly in place.Piston and crank mechanism wear is considered a serious problem.According to the results of measuring the compression, one can judge the condition of the parts of the CPGLet's consider three main faults:

Oil leakage. Check that the pipes are tightly connected to the pump unions and that they are not cracked. Problem tubes are sealed with sealant or replaced.

Insufficient oil supply. Most likely, the lubrication passages are clogged.

Cracks in the oil pump housing. Part needs to be replaced.

Here's how to diagnose the lubrication system:The chain brake often does not work due to clogging of grease or sawdust in the brake band and the space under the cover. All parts should be cleaned from blockages. Perhaps the tape is simply worn out, then it needs to be replaced.The chain brake is restored by mechanical cleaningSome parts of a chainsaw will wear out faster than others. These include the drive sprocket, bar, chain, anti-vibration elements. For quick replacement, it is best to always have spare parts on hand. Sharpening the chain should not be neglected.In this article, we will explain why breakdowns of certain parts of the chainsaw occur and how to fix them. If your saw stops starting or does not work as it should - do not rush to send it to the service. The simplest repairs may be enough to bring the instrument back to life.Most chainsaw breakdowns are trivial. The imaginary feeling of the complexity of the design disappears after the first complete disassembly, because the principle of operation of all the components of the mechanism is extremely simple and intuitive. Therefore, stock up on wrenches and sockets from 6 to 22 mm, slotted, cross-head screwdrivers, hex wrenches and a snap ring puller. Drain oil and fuel before disassembling, place a clean rag under the saw.As a rule, it is not necessary to completely disassemble the saw when repairing breakdowns. Work is being carried out on one or more units of the chainsaw:

Chain, tire, clutch and overrun brake. Access can be obtained by removing the side cover on the right side, loosening the bar nuts and the chain tension bolt. The brake is located in the lid cavity.

The clutch is located on the motor shaft to the left of the guide bar.

Chain lubrication system. The oil pump is located under the clutch basket or integrated into the crankcase housing.

The muffler is located in the front of the chainsaw, secured with two nuts.

The air filter is located on the top of the chainsaw, just under the cover.

The carburetor is located just below the air filter, and the connection to the engine cylinder can be made via an adapter.

The ignition system is located under the left side cover, in the cavity of which the recoil starter is located.

Engine cylinder. It is attached to the crankcase with four screws from the bottom.

Violation of the dosage of oil in gasoline leads to a drop in power, active clogging of the cylinder, and then to failure of the piston. The first signs of improper refueling are increased exhaust smoke or dry, crackling sound when the engine is running. The chainsaw is filled with A-92 gasoline with the addition of the recommended 2T standard oil (has a blue color) in a ratio of 50: 1.The correctness of the preparation of the fuel-air mixture depends on the setting of the carburetor, which affects both performance and service life. A poor mixture does not allow the motor to develop power, under load the saw seems to "choke", the engine may not start at all.Too rich mixture also causes problems at starting, abundantly covers the cylinder and spark plug electrodes with carbon deposits, fuel consumption is increased. There are three screws on the carburetor for adjustment:

Screw "L" screw in clockwise until it stops, then gradually release until the engine malfunctions disappear.

The screw "H" increases the mixture supply if the engine responds poorly to the accelerator.

The "T" or "S" screw is used if the engine stalls or the chain is idling after adjusting the carburetor.

The carburetor can be correctly adjusted, but it is clogged, in this case it is completely disassembled and washed with gasoline, while the fuel filter, which is located inside the tank, must be replaced.The clogging of the muffler or the air filter is explained by the lack of developed power in the engine, even without load it gains momentum very poorly. The muffler is soaked overnight in a solution of laundry soap and dishwashing detergent, washed well and dried. Do not clean the muffler with metal tools. The foam filter must be either rinsed or replaced with a new one.The main difficulty in removing the engine cylinder is to twist the ignition flywheel and clutch. To do this, you need to block the piston: when moving to the top dead center, insert a rope with a dozen knots tied on it through the candle hole. The clutch has a left-hand thread and rotates either by a hexagonal lug, or by two slots, into which a slightly bored 17 key is inserted. The flywheel is fastened with a regular nut with a right-hand thread. When it is twisted, you need to lightly knock on the end through the wooden block.The state of the cylinder-piston group must be checked every time the saw is disassembled. The presence of scuffs and scratches on the surface of the piston and cylinder is a consequence of improper sawing and a signal for replacement. If only the exhaust side is scored, the saw has overheated multiple times. It is also necessary to check the presence of radial and oblique play in the bearings of the connecting rod and crankshaft.The cylinder can be replaced separately from the connecting rod, for this you need to remove the retaining ring and knock out the pin. To replace the bearing of the connecting rod head, the latter is disassembled by unscrewing two bolts. The rings on the cylinder are changed either after the expiration of the service life, or in the presence of visible deformation. Install the rings with the markings facing up. If the depth of the second groove is greater than the first, an annular expander is first inserted into it.After two chains are worn out, the drive sprocket needs to be replaced. The use of a worn sprocket affects the resource of the crankshaft bearings and is expressed in strong vibration, the chain also deteriorates faster. It is recommended to turn the tire over as the working part is worn out.Poor brake performance can be caused by excessive contamination of the space under the cover or general wear of the band spring. There are also frequent cases when, when the brake is applied, the clutch is destroyed from overheating and the entire unit must be changed.Lack of lubrication on the chain can cause clogging of the oil pump channels; it must be washed in gasoline and cleaned with a fishing line. If the oil comes in too much during operation, you need to slightly tighten the adjusting screw of the oil pump. It happens that during operation the chain is dry, and when it is idle, oil oozes under the clutch. This means that the tightness of the oil hose is broken and must be replaced.The saw often fails to start due to the lack of spark on the spark plug. To make sure, unscrew the plug, put the wire cap on it, press it against the cylinder body and run the starter.The spark may be missing for a number of reasons. First of all, check the contacts of the connection of the wires coming from the ignition module, strip them. Also inspect the flywheel for signs of damage to the magnetic circuit and if the clearance between the module and the flywheel is not broken. If the breakdown persists, replace the ignition module with a new one.The reason for the lack of ignition may be the spark plug itself, check its suitability using a control one. The electrodes must be cleaned with sandpaper and wiped with a rag in gasoline.To keep your saw from breaking less often, follow these tips:

Use only the recommended oil and dosage.

Sharpen or change the chain in time.

Complete disassembly and cleaning of the saw once a year.

Do not overheat the engine with prolonged load.

Change the fuel filter every 70–80 liters of gasoline used.

With the right treatment, your saw will last much longer.Chainsaws are available on the farm almost every resident of the village and many owners of summer cottages. They are easy to use and can be repaired by hand. Finding out the reason why the device does not start, troit, has problems with idling is not so difficult. Despite the types of chainsaws, the repair principles are the same.Chainsaws are divided by class and purpose.The purpose of the tool affects power, weight and dimensions. Chainsaws have three purposes:Before you start disassembling and repairing your chainsaw, prepare the necessary tools and accessories:

Overalls.

Gloves.

Free space on the table.

Candle wrench with screwdriver.

Chainsaw problems can be of two types:

Malfunctions of the engine, ignition system, fuel supply and exhaust.

Malfunctions of other components.

The following indicators will indicate that an engine diagnosis is required:

The tool will not start or will start and stall.

It is unstable.

It works at idle, and under load, the speed drops or stalls.

Lubrication system problems.

The chain brake does not work.

Broken or worn out chain.

The asterisk was worn out.

The appearance of the spark plug should be checked. Take the CANDLE KEY. Remove the insulating cap with the power cable. Unscrew the candle with the key. Fuel does not flow for three reasons:

There is a hole in the fuel filler cap that could be clogged. If this happens, a vacuum has formed, which prevents the fuel from flowing out.

A fuel filter is installed in the tank. It gets dirty over time.

Fuel is poorly supplied from the carburetor to the cylinder.

The first two reasons are identified in the same way. To do this, you must disconnect the hose through which the fuel flows from the carburetor. And check with what pressure it flows. If there is little or no leakage at all, then the tank cap is cleaned with a needle, and the fuel filter is replaced. But first you need to drain the combustible mixture and remove the filter from the tank with a wire hook. If fuel flows well from the disconnected hose, then the air filter is clogged or the carburetor is faulty. The air filter affects the flow of air into the carburetor and enrichment of the combustible mixture. When it is clogged, the mixture is too rich, as air does not come in. This affects the correct functioning of the engine.

Remove the air filter carefully to prevent dust from scattering. Cover the opening in the combustion chamber with a clean cloth.

Blow out the filter and clean with a soft brush. If the filter does not clean, rinse it. Put back after drying.

Before adjusting the carburetor, check that the air filter is clean and that the chain is tight enough. Read the instructions. The manufacturer describes how to properly adjust the carburetor. If there is no instruction, locate the three labeled screws:

H - screw for maximum speed.

L - minimum speed screw.

S - screw for fine adjustment of idle speed.

Take a screwdriver to adjust the carburetor and get started.

Basic adjustment. Produced with the engine off and cold. Turn screws H and L all the way to the right, that is, clockwise. Then one and a half turn to the left.

Idle speed adjustment. Before starting it, turn on and warm up the engine. Turning screw S to the right increases the speed, and to the left decreases it. You need to slow down and control so that the engine runs stably, without pauses.Make sure the chain is still. If the engine suddenly stops, increase the speed a little. And when moving the chain, decrease it.

Checking the engine for acceleration. Smoothly press the fuel button. The adjusted engine should quickly and confidently pick up speed to the maximum. If the engine is lagging and runs unsteadily, turn the screw L to the left no more than an eighth of a turn.

Adjustment of maximum speed. Ignition interruptions occur when maximum rpm is reached. Turn screw H slowly to the left until stability is achieved.

After all adjustments, check that the engine is idling. It should work stably with the chain stationary. If you do not achieve the desired result, repeat all adjustments, excluding the basic one.

When the muffler is clogged, the exhaust gases have nowhere to go. The saw will not run and will not start. The design of the chainsaw allows you to quickly remove the muffler. You may need an Allen key or socket wrench, depending on the mounting method. Unscrew the screws. Swinging the muffler slightly, remove it from the studs. Plug the hole in the engine with a clean cloth. The muffler is dirty due to poor quality oil or improper fuel mixture.